This is silk thread dyed from 24 skeins of raw silk No. 21. It is used as weft for obi fabric. Approximately 25 or more threads are taken from each skein and are about 1 meter or longer for color samples. The approximate number and length are for reference and are not exact. Each color sample is folded in four, so please gently untie the first knot before using. All 12 colors weigh approximately 25g. We would be happy if you use it for works other than obi.